17-集合框架-13-常用对象API(集合框架-LinkedList集合)

package cn.itcast.linkedlist.demo;

import java.util.Iterator;
import java.util.LinkedList;

public class LinkedListDemo {

public static void main(String[] args) {

LinkedList link = new LinkedList();
link.addFirst("abc1");
link.addFirst("abc2");
link.addFirst("abc3");
link.addFirst("abc4");

Iterator it = link.iterator();
while(it.hasNext()){

System.out.println(it.next());
/*
* abc4
* abc3
* abc2
* abc1
*/
}
System.out.println(link.getFirst());
System.out.println(link.getFirst());
System.out.println(link.removeFirst());
System.out.println(link.removeFirst());
}

}